Horseshoe-calking machine.



2 SHEETSSHEET I.

Patented Jan. 18, 1916.

J. M. WATSON.

HORSESHOE CALKING MACHINE.

ATTORNEY THE COLUMBXA PLANDGRAPH CO \VASHINGTON, D C.

J. M. WATSON.

HORSESHOE CALKING MACHINE. APPLICATION FILED MAR. 4, 1915.

1,1 69,959. Patented Jan. 18, 1916.

2 SHEETS-SHEET 2.

WITNESSES.

THE COLUMBIA PLANOGRAPH cm, WASHINGTON. n. C.

Plea e er JOI-IN ivi. arsoiii, or OMAHA, nsneszm.

HORSESHOE-GALKING MACHINE.

icense.

I Specificationof Letters Patent.

Patented Jan. 18,191fi.

Application filed March 4, 1915. Serial No. 12,161.

i To all whom it may concern Be it known that 1, JOHN M. VVATsoN, a

citizen of the United States,residing.in the city of Omaha, county of Douglas,and State of Nebraska, have invented certain new and useful Improvements in Horseshoe-Caulking Machines, and have described the same in the following specification, illustrated by'the accompanying drawings.

My invent1on:relates to thatclass of forgingmachines which are individually adapted not only to form the heel calks 'of 'a horseshoe by bending a heated horseshoeblank,

but also, without reheating, to shape and finish the calks so formed.

It is the object of my improvements to produce a simple, compact, serviceable, convenient and superior machine of this class.

Accordingly the invention resides in the combination and arrangement of the parts of the machine, and in the details of construction hereinafter described and'claimed.

in said drawings, illustrating the best manner in which I have contemplated applying the principles of the invention, F igure 1 is a rear elevation of a horse-shoe calking machine which is constructed in accordance with these principles. Fig. 2 is a sideview of the same machine,*partly in elevation'and partly invertical section on the.

section line 2-2 of Fig. 1. F ig. 3 isawerlZLCZll sect on on the broken l1ne,3.3 of

Fig.2. Fig. dis a horizontal sectionon the broken line H of Fig.3,-;partsbeing shown positioned as in Fig, 1. Fig. 5 is a vertical sectionon the broken line of Fig. 4. Figs. 6 to 11 inclusive, are details in perspective. Fig. 6 shows the plunger carrying thev wedge and two hammers. Fig. .7

shows an inside die and an outside die which engage one limb of the shoe; Fig. 8 shows in amodified form the two dies whichcorrespondingly engage the other limb of the shoe. Fig. 9 is a clamping memberaforholding the shoe in position on the table. Figs. 10 and 11 are modifications of Fig. 9. Fig. 12 is aplan of the table. Fig. 13 isamodification of Fig- 6.

In the illustrated specimen of my inven tion the frame of the machine comprises two vertical standards 1, which are rigidly connected by the horizontal' tablev 2, on which the shoe 29is to be laid in the position shown. These standardshave in their proximate faces pair of vertical grooves 6 facing toward each other. They are also provided with rear eXtensions, or brackets a having' a similar pair of grooves 5. In the bearings 7, formed in this frame, is journaled the shaft 8, which is understood to be rotated, either continuously or interruptedly 1 as maybe desired, to operate the machine.

On this shaft is keyed the disk 9, having the I from the table 2 by the screws 47. 's'lhe.

plunger .stem 11 carries the'fixedlcollai 28 for occasional engagement with. the slide. block 27, and has the latch 15. This latch is actuated by the spring. 16 and the bellcrank lever 17 to hold up theplunger when. raised to the position shown in Fig. .2, and to release the stem and let downthe plnn-i: ger to the position shown in Fig. 1, whenever the roller 18, carried by that lever, is: engaged by the wedge knob 19;. projecting from the periphery of the disk 9. 'Onl'th'e. same shaft 8 is keyed an eccentrichaving the strap 20 actuating the connecting rod 21 and theplunger stem 22. This stem car-. ries the wedge'23, and preferably has also. the hammers 25 which are adapted to press down formatively upon the upper ends of both calks in position upon the table. These hammers, however, are to be structurally, omitted from the mechanisim'as shown in Fig. 13, in case thecalks to be formed are of the sharp pattern shown in Fig. 10. .The same stem preferably carries also the terminalguiding extension or stem 24. The plunger stem 2-2 works through a guiding hole in the bracket 26, while the guiding. stem '24 works in the vertical hole48 through the table 1' The holder for clamping the shoe down on the table'2, comprises a pa'irof duplicate side bars, denoted by the. same nu merals 30, and flexibly connected byr the are to be shaped against them.

On the table 2 are seated two pairs of spaced, alining and laterallyrmovable dies, 37, 38, 39 and 40. The outer dies 37 and 40 are similar to each other, and individu ally carry the downwardly projecting screw 41, which is adapted to be moved laterally in the guiding slot 51 perforating the table. By means of the nut 42 on the free end of this screw under the table, these two dies,

, being shaped in conformity with the outside of the shoe, and being manually adjusted at a suitable distance apart according to the width of the shoe, are set immovably as adjusted and shown. Each of the inner dies 38 and 39, which are similar to each other, has a guiding leg 43, having the retaining shoe 52 and working by lateral translation in the slots 44, which perforate the table. These two dies, when not separated by the wedge 23, are approximated by the compression springs 45 to release the shoe. These dies, 37, 38, 39 and '40, may be made in various modified forms, according to the pattern of the shoe and calk, and according as the shoe is the right or left member of a pair of shoes of that pattern; and. may be readily interchanged with the modifications, as for example, dies 39 and 40 with the modified forms 46 and 47 respectively.

Operatively the shoe to be calked, being suitably heated for forging, is laid fiat on the table between and contacting with the fitted and preadjusted external dies 37 and 40, and outside the internal dies 38 and 39, but with its calkable ends jutting over the rear margin of the table across the path of the bender. In this position the shoe is to be adjusted in abutting contact with the crossbar 3, preadjusted by the screws'47 as a stop gage, according to the length of the calks to be formed. Then by operating the foot-lever the'shoe is gripped by the clamps 34 in the position shown in Fig. 4, and is held firmly in that position by the lever catch 50. Then by the rotation of the power shaft and the resulting upward movement of'the plunger stem 11, the bending rollers and the die-plate are lifted from the posi tion shown in Fig. 1 to that shown in Fig.

2, where they are caught and held by the action of the latch 15, and there sustained until let go by that latch. Thereby the calks are bent up by the rollers 12, and the plunger stem 22, actuated by the eccentric,

and actuating the wedge 23, forces the dies 38 and 39 apart and against the calks, and then drives the hammers formatively down upon the ends of the calks. calks, softened by heat and bent up as described, are subjected simultaneously to lateral compression between the inner and the outer dies, to antero-posterior compression between the clamp 34, 35 or 36, and the die plate 13, and to vertical compression between the hammers and the table; whereby the calks are completely formed, and finished at every bounding surface. As the rotation of the power shaft then continues, the plunger 22 lifts the hammers 25-clear of the calks and relieves the inner dies from the separating pressure of the wedge; while the plunger stem 11, being unlatched by the movement of the bell-crank lever, drops the bending rollers and the die-plate to the in operative position below the level of the table, as shown in Fig. l. The dies 38 and 39 are then pushed inward clear of the shoe by the springs 45. Then by a movement of the foot-lever the clamps 34 are lifted away from the shoe, which may then Thereby the be removed from the machine to make way for its successor.

I claim as my invention 1. A calking machine of the specified class, comprising a table on which the shoe is to be laid, means for clamping the shoe to the table, a pair of movable outside dies seated on the table, means for setting these dies at a variable distance apart equal to' the Width of the shoe between them, a pair of inside dies secured to the table, means for guiding the inside dies, a plunger actuating the inside dies to engage the shoe, a bender and a die-plate which are vertically reciprocable at the margin of the table, and a plunger actuating the bender and the dieplate.

2. A calking machine of the specified class, comprising a table for the support of the shoe, a stop gage spaced an adjustable distance from the table, and means for clamping the shoe to the table in a location regulated by the adjustment of the gage.

3. A calking machine of the specified class, comprising a'table for the support of the shoe, a pair of vertically reciprocable clamping members working through the table to engage the limbs of the shoe respectively, a link connecting the clamps, and an actuating lever connected with the link.

4. A calking machine of the specified class, comprising a table for the supportof the shoe, a block movable vertically above the table, means for adjusting the block to clamp the shoe to the table, and means for afterward pressing the upturned shoe calk gornlicatively forward against the clamping loc 5. A calking machine of the specified class, comprising a table for the support of the shoe, a plunger Working vertically through a hole in the table, and carrying a pair of hammers adapted formatively to engage the end surfaces of the calks respectively and means for compressing horizontally against the hammers the shoe-calks in process of formation.

6. A calking machine of the specified Copies of this patent may be obtained for class comprising a table forthe support of the shoe, means for clamping the shoe to the table, a pair of movable dies attached to the table, and a plunger Working through a hole in the table to spread the dies to engage the shoe so clamped.

In testimony whereof I subscribe this specification in the presence of two Witnesses.

JOHN M. "WATSON.

Witnesses:

WILLARD EDDY,

J. A. HEBENSTREIT.

five cents each, by addressing the Commissioner of Patents, Washington, D. G1" 

